KR960003451A - Display method and device - Google Patents

Display method and device Download PDF

Info

Publication number
KR960003451A
KR960003451A KR1019950016843A KR19950016843A KR960003451A KR 960003451 A KR960003451 A KR 960003451A KR 1019950016843 A KR1019950016843 A KR 1019950016843A KR 19950016843 A KR19950016843 A KR 19950016843A KR 960003451 A KR960003451 A KR 960003451A
Authority
KR
South Korea
Prior art keywords
image
distortion
projection surface
changing
image data
Prior art date
Application number
KR1019950016843A
Other languages
Korean (ko)
Other versions
KR100268366B1 (en
Inventor
신이찌 스나까와
가즈또시 시마다
에이사꾸 다쯔미
시게끼 모리
가즈히로 마쯔바야시
다까시 하라다
가쯔히꼬 나가사끼
료지 후꾸다
Original Assignee
미따라이 하지메
캐논 가부시끼가이샤
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 미따라이 하지메, 캐논 가부시끼가이샤 filed Critical 미따라이 하지메
Publication of KR960003451A publication Critical patent/KR960003451A/en
Application granted granted Critical
Publication of KR100268366B1 publication Critical patent/KR100268366B1/en

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N9/00—Details of colour television systems
    • H04N9/12—Picture reproducers
    • H04N9/31—Projection devices for colour picture display, e.g. using electronic spatial light modulators [ESLM]
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N9/00—Details of colour television systems
    • H04N9/12—Picture reproducers
    • H04N9/31—Projection devices for colour picture display, e.g. using electronic spatial light modulators [ESLM]
    • H04N9/3179—Video signal processing therefor
    • H04N9/3185—Geometric adjustment, e.g. keystone or convergence
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N5/00—Details of television systems
    • H04N5/74—Projection arrangements for image reproduction, e.g. using eidophor
    • H04N5/7416—Projection arrangements for image reproduction, e.g. using eidophor involving the use of a spatial light modulator, e.g. a light valve, controlled by a video signal
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N9/00—Details of colour television systems
    • H04N9/12—Picture reproducers
    • H04N9/31—Projection devices for colour picture display, e.g. using electronic spatial light modulators [ESLM]
    • H04N9/3191—Testing thereof
    • H04N9/3194—Testing thereof including sensor feedback

Landscapes

  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Physics & Mathematics (AREA)
  • Geometry (AREA)
  • Transforming Electric Information Into Light Information (AREA)
  • Projection Apparatus (AREA)
  • Testing, Inspecting, Measuring Of Stereoscopic Televisions And Televisions (AREA)
  • Liquid Crystal (AREA)
  • Liquid Crystal Display Device Control (AREA)
  • Control Of Indicators Other Than Cathode Ray Tubes (AREA)

Abstract

본 발명에 따라, 투영광의 광학 축 방향과 투영면의 법선 방향 간의 불일치를 기준으로, 이미지 데이타가 이러한 왜곡으로 인해 발생되는 디스플레이 이미지의 왜곡을 상쇄하도록 변경되어 디스플레이될 수 있다. 디스플레이 이미지의 품질이 상승되고 기능 효율성이 향상된다. 본 발명에서, 이미지 데이타가 (m×n) 픽셀들로 구성되고, 좌상부 위치가 원점으로 설정되고, X축이 수평 방향으로 설정되고, Y축이 수직 방향으로 설정된다. 사각형 ABCD가 메모리에 저장된 이미지의 매핑 데이타에 대응한다. 예를 들어, 투영면이 기울어지고 투영면의 디스플레이 이미지가 우로 갈수록 확대되는 경우에, 이미지는 사각형 ABEF처럼 변경된다. 즉, 이미지 데이타가 이미지의 우 방향으로 수직 방향의 감소 비율을 증가시키면서 변경된다. 이 변경된 이미지 데이타를 투영면에 투영함으로써, 매핑 데이타의 투영과 왜곡에 의해 발생하는 왜곡이 상쇄되어, 왜곡 없는 이미지가 디스플레이된다.According to the present invention, based on the mismatch between the optical axis direction of the projection light and the normal direction of the projection surface, the image data can be changed and displayed to cancel the distortion of the display image caused by such distortion. The quality of the display image is improved and the functional efficiency is improved. In the present invention, the image data is composed of (m × n) pixels, the upper left position is set as the origin, the X axis is set in the horizontal direction, and the Y axis is set in the vertical direction. The rectangle ABCD corresponds to the mapping data of the image stored in the memory. For example, if the projection surface is tilted and the display image of the projection surface is enlarged to the right, the image is changed like a rectangular ABEF. That is, the image data is changed while increasing the reduction ratio in the vertical direction in the right direction of the image. By projecting the changed image data onto the projection surface, the distortion caused by the projection and the distortion of the mapping data is canceled, and the image without distortion is displayed.

Description

디스플레이 방법 및 장치Display method and device

본 내용은 요부공개 건이므로 전문내용을 수록하지 않았음Since this is an open matter, no full text was included.

제1도는 실시예의 디스플레이 장치의 아웃라인을 도시한 사시도.1 is a perspective view showing the outline of the display device of the embodiment;

Claims (9)

디스플레이 장치로부터의 투영광의 광학 축의 방향과 상기 투영면의 법선의 방향 간의 불일치 량을 검출하기 위한 검출 수단; 상기 검출 수단에 의해 검출된 불일치 량을 기준으로 상기 불일치 량과 관련된 디스플레이 이미지의 왜곡을 상쇄하기 위해 출력 이미지 데이타를 변경시키기 위한 변경 수단; 및 상기 변경 수단에 의해 변경된 이미지 데이타를 사용하여 이미지를 디스플레이하기 위한 디스플레이 수단을 포함하는 것을 특징으로 하는 광을 외부 투영면에 투영함으로써 정보를 디스플레이하기 위한 디스플레이 장치.Detection means for detecting an amount of mismatch between the direction of the optical axis of the projection light from the display device and the direction of the normal of the projection surface; Changing means for changing the output image data to cancel the distortion of the display image associated with the discrepancy amount based on the discrepancy amount detected by the detection means; And display means for displaying an image using the image data changed by the changing means. The display apparatus for displaying information by projecting light onto an external projection surface. 제1항에 있어서, 상기 검출 수단이 상기 투영면 상의 적어도 3개의 점들과 상기 디스플레이 장치 간의 거리를 측정함으로써, 투영 광의 광학 축 방향과 상기 투영면의 법선 방향 간의 불일치 량을 검출하는 것을 특징으로 하는 디스플레이 장치.The display apparatus according to claim 1, wherein the detection means detects an amount of discrepancy between the optical axis direction of the projection light and the normal direction of the projection surface by measuring a distance between at least three points on the projection surface and the display apparatus. . 제1항에 있어서, 상기 변경 수단이 상기 검출 수단에 의해 검출된 불일치 량을 기준으로 상기 불일치량으로 인한 디스플레이 이미지의 왜곡을 상쇄하기 위해 수평 및 수직 방향으로 배율을 변경시키면서 출력 이미지 데이타를 감소 또는 확대하는 것을 특징으로 하는 디스플레이 장치.The method according to claim 1, wherein the changing means reduces or reduces the output image data while changing magnification in the horizontal and vertical directions to cancel the distortion of the display image due to the inconsistency based on the amount of inconsistency detected by the detecting means. Display device, characterized in that to enlarge. 제1항에 있어서, 상기 검출 수단에 의한 상기 불일치 량의 검출이 선정된 시간 간격마다 정기적으로 실행되는 것을 특징으로 하는 디스플레이 장치.The display apparatus according to claim 1, wherein the detection of the amount of inconsistency by the detecting means is performed periodically at a predetermined time interval. 투영면에 디스플레이된 이미지가 페치되고, 그의 왜곡이 검출되고, 이미지 데이타가 상기 왜곡을 제거하기 위해 보정되고, 이미지가 상디 투영면에 디스플레이되는 처리들을 반복함으로써, 상기 왜곡을 제거하는 적합한 보정량을 구하기 위한 획득 수단, 상기 획득 수단에 의해 획득된 보정량을 기준으로 출력 이미지 데이타를 변경시키기 위한 변경 수단; 및 상기 변경 수단에 의해 변경된 출력 이미지 데이타를 사용하여 상기 투영면에 이미지를 디스플레이하기 위한 디스플레이 수단을 포함하는 것을 특징으로 하는 광을 외부 투영면에 투영함으로써 정보를 디스플레이하기 위한 디스플레이 장치.An image displayed on the projection surface is fetched, its distortion is detected, image data is corrected to remove the distortion, and the image is displayed on the projection surface to repeat the processing to obtain an appropriate correction amount for removing the distortion Means for changing the output image data on the basis of the correction amount acquired by the obtaining means; And display means for displaying an image on the projection surface using the output image data changed by the changing means. The display apparatus for displaying information by projecting light onto an external projection surface. 제5항에 있어서, 상기 획득 수단이 상기 투영면에 테스트 패턴을 디스플레이하고 상기 테스트 패턴 이미지를 페치하기 위한 페칭 수단; 상기 페칭 수단에 의해 페치된 테스트 패턴 이미지와 고유 테스트 패턴을 비교함으로써 상기 테스트 패턴 이미지의 왜곡을 검출하기 위한 검출 수단; 및 상기 검출 수단에 의해 검출된 왜곡을 기준으로 한 테스트 패턴의 이미지 데이타를 변경하기 위한 테스트 패턴 변경 수단을 포함하는데, 상기 페칭 수단, 상기 검출 수단, 및 상기 변경 수단의 처리들이 상기 페칭 수단에 의해 페치된 테스트 패턴 이미지의 왜곡이 선정된 크기 보다 작게 될 때까지 반복됨으로써, 이미지의 적합한 보정량을 구하는 것을 특징으로 하는 디스플레이 장치.6. The apparatus of claim 5, wherein the obtaining means comprises: fetching means for displaying a test pattern on the projection surface and fetching the test pattern image; Detection means for detecting a distortion of the test pattern image by comparing a test pattern image fetched by the fetching means with a unique test pattern; And test pattern changing means for changing the image data of the test pattern on the basis of the distortion detected by the detecting means, wherein the processes of the fetching means, the detecting means, and the changing means are executed by the fetching means. And repeating until the distortion of the fetched test pattern image becomes smaller than the predetermined size, thereby obtaining an appropriate correction amount of the image. 제6항에 있어서, 상기 테스트 패턴이 서로 직각으로 교차하는 다수의 직선들로 구성되고, 상기 검출 수단이 상기 테스트 패턴 이미지에서 상기 직선들의 교차에 의해 형성된 각도를 기준으로 상기 테스트 패턴 이미지의 왜곡을 검출하는 것을 특징으로 하는 디스플레이 장치.The method of claim 6, wherein the test pattern is composed of a plurality of straight lines that cross at right angles to each other, wherein the detection means for the distortion of the test pattern image based on the angle formed by the intersection of the straight lines in the test pattern image Display device characterized in that for detecting. 상기 디스플레이 장치로부터의 투영 광의 광학 축의 방향과 상기 투영면의 법선의 방향 간의 불일치 량을 검출하는 감출 단계; 상기 검출 단계에서 검출된 불일치 량을 기준으로 출력 이미지 데이타를 변경하는 변경단계; 및 상기 변경 단계에서 변경된 이미지 데이타를 사용하여 이미지를 디스플레이하는 디스플레이 단계를 포함하는 것을 특징으로 하는 광을 외부 투영면에 투영함으로써 정보를 디스플레이하는 디스플레이 방법.Detecting an amount of mismatch between the direction of the optical axis of the projection light from the display device and the direction of the normal of the projection surface; A changing step of changing the output image data based on the amount of mismatch detected in the detecting step; And a display step of displaying an image using the image data changed in the changing step. The display method of displaying information by projecting light onto an external projection surface. 상기 투영면에 디스플레이된 이미지가 페치되고, 그의 왜곡이 검출되고, 이미지 데이타가 상기 왜곡을 제거하도록 보정되고, 아미지가 상기 투영면에 디스플레이되는 처리들을 반복함으로써, 상기 왜곡을 제거하기 위한 적합한 보정량을 구하는 획득 단계; 상기 획득 단계에서 보정량을 기준으로 출력 이미지 데이타를 변경하는 변경 단계; 및 상기 변경 단계에서 변경된 출력 이미지 데이타를 사용하여 상기 투영면에 이미지를 디스플레이하는 디스플레이 단계를 포함하는 것을 특징으로 하는 광을 외부 투영면에 투영함으로써 정보를 디스플레이하는 디스플레이 방법.An image displayed on the projection surface is fetched, its distortion is detected, image data is corrected to remove the distortion, and an image is obtained by repeating the processes displayed on the projection surface to obtain a suitable correction amount for removing the distortion step; A changing step of changing output image data on the basis of the correction amount in the obtaining step; And a display step of displaying an image on the projection surface using the output image data changed in the changing step. ※ 참고사항 : 최초출원 내용에 의하여 공개하는 것임.※ Note: The disclosure is based on the initial application.
KR1019950016843A 1994-06-23 1995-06-22 Display method and apparatus KR100268366B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP94-141482 1994-06-23
JP6141482A JPH089309A (en) 1994-06-23 1994-06-23 Display method and its device

Publications (2)

Publication Number Publication Date
KR960003451A true KR960003451A (en) 1996-01-26
KR100268366B1 KR100268366B1 (en) 2000-10-16

Family

ID=15292933

Family Applications (1)

Application Number Title Priority Date Filing Date
KR1019950016843A KR100268366B1 (en) 1994-06-23 1995-06-22 Display method and apparatus

Country Status (5)

Country Link
US (1) US6310662B1 (en)
EP (1) EP0689353B1 (en)
JP (1) JPH089309A (en)
KR (1) KR100268366B1 (en)
DE (1) DE69523670T2 (en)

Families Citing this family (76)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5841413A (en) * 1997-06-13 1998-11-24 Matsushita Electric Industrial Co., Ltd. Method and apparatus for moving pixel distortion removal for a plasma display panel using minimum MPD distance code
DE19737374C2 (en) 1997-08-27 1999-09-02 Ldt Gmbh & Co Method for compensating geometric image errors in video images and a projector for carrying out the method
JP4493113B2 (en) 1999-01-29 2010-06-30 株式会社リコー Projector and projection image correction apparatus
JP2000253293A (en) * 1999-02-26 2000-09-14 Minolta Co Ltd Digital camera
CN1196049C (en) * 1999-08-27 2005-04-06 西门子公司 Small appts. for processing communications and/or data, said appts. comprising projector
US6597410B1 (en) * 1999-11-10 2003-07-22 International Business Machines Corporation System for the automatic adaptation of projector images and a method for the implementation thereof
TW399163B (en) * 1999-11-19 2000-07-21 Acer Peripherals Inc Rear projector with adjustable image size and its method
NO20000656A (en) * 2000-02-09 2001-07-09 Knut Krogstad Digital correction module for video projector
JP2001236509A (en) * 2000-02-24 2001-08-31 Minolta Co Ltd Device and method for detecting inclination of subject
JP2001346132A (en) * 2000-03-31 2001-12-14 Ricoh Co Ltd Image conversion method, image conversion server, image conversion system, image projector, image projection system, image conversion method, image projection method and computer-readable recording medium for recording program to allow computer to perform the methods
TW480362B (en) * 2000-09-14 2002-03-21 Delta Electronics Inc Automatic calibration method and device of the projector display
GB2377110A (en) * 2001-06-30 2002-12-31 Hewlett Packard Co Movable image projection from portable data storage media
JP4260634B2 (en) 2002-02-15 2009-04-30 富士通株式会社 Image conversion method and apparatus, image recognition apparatus, robot control apparatus, and image projection apparatus
US6930669B2 (en) * 2002-03-18 2005-08-16 Technology Innovations, Llc Portable personal computing device with fully integrated projection display system
KR100484139B1 (en) * 2002-05-17 2005-04-18 삼성전자주식회사 Apparatus and method for examining the function of convergence adjustment
JP2004004284A (en) 2002-05-31 2004-01-08 Canon Inc Projection display apparatus
JP4028306B2 (en) * 2002-06-26 2007-12-26 富士フイルム株式会社 Digital imaging device
JP3996617B2 (en) * 2002-07-23 2007-10-24 Ｎｅｃディスプレイソリューションズ株式会社 Projector device with image distortion correction function
JP4144292B2 (en) * 2002-08-20 2008-09-03 ソニー株式会社 Image processing apparatus, image processing system, and image processing method
JP3789108B2 (en) * 2002-10-09 2006-06-21 キヤノン株式会社 Image display device
JP3731663B2 (en) 2002-12-04 2006-01-05 セイコーエプソン株式会社 Image processing system, projector, and image processing method
KR100517307B1 (en) * 2002-12-10 2005-09-27 엘지전자 주식회사 Apparatus and method for displaying the operation state and correcting keystone distortion using laser beam in a image display device
US7380946B1 (en) * 2003-01-28 2008-06-03 Pixelworks, Inc. Semiautomatic keystone correction system and method
JP3809423B2 (en) * 2003-03-07 2006-08-16 キヤノン株式会社 Display device and control method of display device
JP2004282129A (en) * 2003-03-12 2004-10-07 Sharp Corp Projection display apparatus
US6811264B2 (en) * 2003-03-21 2004-11-02 Mitsubishi Electric Research Laboratories, Inc. Geometrically aware projector
JP2004318121A (en) * 2003-04-04 2004-11-11 Canon Inc Display control device, display system and tv device
JP3742085B2 (en) * 2003-05-21 2006-02-01 Ｎｅｃビューテクノロジー株式会社 Projector having tilt angle measuring device
JP2005006228A (en) 2003-06-13 2005-01-06 Casio Comput Co Ltd Projector
JP4689948B2 (en) * 2003-06-23 2011-06-01 Ｎｅｃディスプレイソリューションズ株式会社 projector
DE10329224B3 (en) * 2003-06-28 2005-10-13 Wolf Kloss Aligning device for an optical instrument e.g. a camera has range-finding device for determining distance from an object with elements for determining two distance measurements along two different measurement axes and two display devices
JP2005033703A (en) 2003-07-11 2005-02-03 Seiko Epson Corp System and method for processing image, projector, program, and information storage medium
JP4155890B2 (en) * 2003-07-15 2008-09-24 カシオ計算機株式会社 Projector, projector tilt angle acquisition method, and projection image correction method
JP3969363B2 (en) * 2003-07-30 2007-09-05 カシオ計算機株式会社 Projector and projection image correction method for projector
US7001023B2 (en) 2003-08-06 2006-02-21 Mitsubishi Electric Research Laboratories, Inc. Method and system for calibrating projectors to arbitrarily shaped surfaces with discrete optical sensors mounted at the surfaces
JP2005064667A (en) 2003-08-08 2005-03-10 Nec Viewtechnology Ltd Projection apparatus and method
JP3772870B2 (en) * 2003-08-25 2006-05-10 カシオ計算機株式会社 Projection apparatus, projection method, and program
US7204596B2 (en) * 2003-09-19 2007-04-17 Nec Corporation Projector with tilt angle measuring device
JP3879858B2 (en) * 2003-09-26 2007-02-14 セイコーエプソン株式会社 Image processing system, projector, and image processing method
JP3928623B2 (en) 2004-02-27 2007-06-13 カシオ計算機株式会社 Projection apparatus, distance measurement processing method, and program
US6997563B1 (en) * 2004-05-19 2006-02-14 Pixelworks, Inc. Keystone correction derived from the parameters of projectors
JP4803972B2 (en) * 2004-06-08 2011-10-26 キヤノン株式会社 Image projection device
JP4867154B2 (en) * 2004-11-09 2012-02-01 カシオ計算機株式会社 Projection apparatus, projection setting method, and program
US20060146294A1 (en) * 2004-12-30 2006-07-06 Chul Chung Device and method for arranging a display
JP4380557B2 (en) * 2005-02-15 2009-12-09 カシオ計算機株式会社 Projector, chart image display method and program
JP2006317795A (en) * 2005-05-13 2006-11-24 Toshiba Corp Projector and range-finding method thereof
JP4774826B2 (en) * 2005-06-23 2011-09-14 カシオ計算機株式会社 Projection apparatus, projection control method, and program
US7441906B1 (en) 2005-07-05 2008-10-28 Pixelworks, Inc. Keystone correction system and method
JP2007067495A (en) * 2005-08-29 2007-03-15 Toshiba Corp Projector
TWI511122B (en) * 2006-08-11 2015-12-01 Geo Semiconductor Inc Calibration method and system to correct for image distortion of a camera
US8406562B2 (en) * 2006-08-11 2013-03-26 Geo Semiconductor Inc. System and method for automated calibration and correction of display geometry and color
JP4926679B2 (en) * 2006-12-06 2012-05-09 キヤノン株式会社 Image display device
JP4407727B2 (en) 2007-07-06 2010-02-03 セイコーエプソン株式会社 Scanning image display device
JP4835538B2 (en) * 2007-08-10 2011-12-14 パナソニック電工株式会社 Image display device
JP4692531B2 (en) * 2007-09-13 2011-06-01 カシオ計算機株式会社 Projector and optical distance measuring method.
US8405727B2 (en) * 2008-05-01 2013-03-26 Apple Inc. Apparatus and method for calibrating image capture devices
US8508671B2 (en) 2008-09-08 2013-08-13 Apple Inc. Projection systems and methods
US8538084B2 (en) * 2008-09-08 2013-09-17 Apple Inc. Method and apparatus for depth sensing keystoning
US8610726B2 (en) * 2008-09-26 2013-12-17 Apple Inc. Computer systems and methods with projected display
US20100079426A1 (en) * 2008-09-26 2010-04-01 Apple Inc. Spatial ambient light profiling
US7881603B2 (en) * 2008-09-26 2011-02-01 Apple Inc. Dichroic aperture for electronic imaging device
US8527908B2 (en) 2008-09-26 2013-09-03 Apple Inc. Computer user interface system and methods
DE102009023018A1 (en) * 2009-05-28 2010-12-02 T-Mobile International Ag Projector for projecting image or image sequence or film on projection surface, has electrically controlled light emitter, processing unit for controlling light emitter, and one or multiple position sensors
US8619128B2 (en) 2009-09-30 2013-12-31 Apple Inc. Systems and methods for an imaging system using multiple image sensors
US8502926B2 (en) * 2009-09-30 2013-08-06 Apple Inc. Display system having coherent and incoherent light sources
JP5409263B2 (en) * 2009-10-28 2014-02-05 京セラ株式会社 Mobile electronic device and mobile phone
US8687070B2 (en) * 2009-12-22 2014-04-01 Apple Inc. Image capture device having tilt and/or perspective correction
US8497897B2 (en) 2010-08-17 2013-07-30 Apple Inc. Image capture using luminance and chrominance sensors
US8538132B2 (en) 2010-09-24 2013-09-17 Apple Inc. Component concentricity
US9398278B2 (en) * 2011-01-06 2016-07-19 Telenav, Inc. Graphical display system with adaptive keystone mechanism and method of operation thereof
JP5218627B2 (en) * 2011-11-21 2013-06-26 日本電気株式会社 Projected image correction system and method
CN104280739A (en) * 2013-07-10 2015-01-14 富泰华工业（深圳）有限公司 Distance measurement system and method
US9356061B2 (en) 2013-08-05 2016-05-31 Apple Inc. Image sensor with buried light shield and vertical gate
JP6700731B2 (en) * 2015-11-13 2020-05-27 キヤノン株式会社 Projection device and projection system
JP2018139377A (en) 2017-02-24 2018-09-06 キヤノン株式会社 Projection apparatus and control method of the same
CN110058483B (en) * 2018-01-18 2022-06-10 深圳光峰科技股份有限公司 Automatic focusing system, projection equipment, automatic focusing method and storage medium

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4684996A (en) * 1986-08-25 1987-08-04 Eastman Kodak Company Video projector with optical feedback
DE3874366T2 (en) * 1987-02-26 1993-02-11 Matsushita Electric Ind Co Ltd AUTOMATIC CONVERGENCE COMPARISON SYSTEM FOR COLOR TELEVISION PLAYBACK DEVICES.
JP2899059B2 (en) * 1990-04-27 1999-06-02 キヤノン株式会社 Projection television device
JP2653899B2 (en) * 1990-06-07 1997-09-17 松下電器産業株式会社 Image correction device
JPH04181935A (en) * 1990-11-16 1992-06-29 Canon Inc Optical device having automatic focus detecting means
JP3409330B2 (en) * 1991-02-08 2003-05-26 ソニー株式会社 Adjustment device and adjustment method for projection display device
JPH04355740A (en) 1991-06-03 1992-12-09 Hitachi Ltd Projector
DE4236091A1 (en) 1992-10-26 1994-04-28 Nsm Ag Projection system for entertainment and play equipment

Also Published As

Publication number Publication date
JPH089309A (en) 1996-01-12
EP0689353A2 (en) 1995-12-27
EP0689353B1 (en) 2001-11-07
EP0689353A3 (en) 1997-03-12
US6310662B1 (en) 2001-10-30
KR100268366B1 (en) 2000-10-16
DE69523670T2 (en) 2002-08-01
DE69523670D1 (en) 2001-12-13

Similar Documents

Publication Publication Date Title
KR960003451A (en) Display method and device
JPH08189898A (en) Defect inspecting device
WO2001057496A3 (en) Straight line defect detection
JP2893078B2 (en) Shading correction method and device
US20100020365A1 (en) Method of pressure detection for selective scanning of a document
US5113267A (en) Apparatus for and method of reconstructing a document
JP2001201322A (en) Target of non-contact extensometer and non-contact extensomemter
JP2005091331A (en) Inspection device and method of printed matter
DK200000635A (en) Process for making electronic postcards.
EP0198571B1 (en) Method and system for patching original and extracting original-trimming data in scanner
JPH05203427A (en) Optical shape recognizing device
JP2002310928A (en) Pattern defect inspecting method and device thereof
JPH10289311A (en) Check method and device for printed matter
JPS63254855A (en) Scanning distortion correcting system
JP2003174568A5 (en)
JPS61109179A (en) Measurement device for image pickup distortion
JP2000275185A (en) Flaw inspecting apparatus and method
JP2004317330A (en) Method and apparatus for inspecting panel for display
JPH0540014A (en) System for detecting position of object to be measured
JP2002214148A (en) Image processing method
KR980005243A (en) Calibration Method for Convergence Measurement of Color Cathode Ray Tubes
JP2002109544A (en) Seal impression positioning method and device
JPH03172070A (en) Picture reader
JPS6029881A (en) Optical character reader
JP2002133422A (en) Automatic detecting device for inclination of image

Legal Events

Date Code Title Description
A201 Request for examination
E902 Notification of reason for refusal
AMND Amendment
E601 Decision to refuse application
J201 Request for trial against refusal decision
B601 Maintenance of original decision after re-examination before a trial
J301 Trial decision

Free format text: TRIAL DECISION FOR APPEAL AGAINST DECISION TO DECLINE REFUSAL REQUESTED 19990302

Effective date: 20000426

S901 Examination by remand of revocation
GRNO Decision to grant (after opposition)
GRNT Written decision to grant
FPAY Annual fee payment

Payment date: 20120625

Year of fee payment: 13

FPAY Annual fee payment

Payment date: 20130626

Year of fee payment: 14

LAPS Lapse due to unpaid annual fee